Tactile Switch

[Eros]

Hi,

I have problem with my tactile switch. I can only use it for a day before it burned. Please advice.

Tactile switch that burned. 3 of them.


I wired 3 x 18650 Sony VTC5 parallel



The batteries soldered to this board.



I wired the 510 connector and the tactile switch like below. The tactile switch is on the negative side.



The mod look like this.



Now i cant fire it. Cant vape it. I have replace the tactile switch 3 times already. So, i seek for advice. Should i find other type of tactile or add something in my wiring.

 

[Eros]

My wiring diagram. Sorry for my bad drawing. Drawn using my ipad.

I saw people use resistor in their setup. If it is necessary, can you guys suggest one that i can add in this cramp space setup.

Thank you guys.

 

[JeremyR]

That's a nice looking mod. You really need to check & recheck the way you have it setup, make sure you don't risk a vent. I imagine the switch is wired wrong, it probably can not handle 4 volts let alone 12. I'm not a mod maker but most switches are set to only activate the chip which is connected to the batteries & delivers the voltage. Looks like your wired directly to the switch.. Any mod maker can correct my assumption if needed.

Edit - see your drawing, the switch should not be in the high voltage path. There should be another spot on the board for the switch. , again experience mod makers can clarify my assumption.

 

[Eros]

I put epoxy to hold the switch. Actually i covered the whole switch with epoxy. Is it wrong to do that?

The switch i think received full power from negative side of those 3 x vtc5 on one leg. The other leg i solder it to the 510 body.

Is it the reason why the switch burned?

Edit - the board actually a power bank board. Only have positive and negative input spot to solder. Yes, the switch is in the high voltage path. Maybe can suggest me an add-on in my wiring.

P/s: i thought i can have a dual function device. A vape mod and a power bank.

 

[retird]

Tactile switch is not designed to carry amperage thru it....you need a switch rated for the amperage going thru it....Tac switches are used for logic switching not line voltage/amperage switching...

 

[JeremyR]

Yeah you'll probably end up with a toggle type switch. Do you have a fuse onboard. You may consider one on each side

Please be careful..

 

[Eros]

Tactile switch is not designed to carry amperage thru it....you need a switch rated for the amperage going thru it....Tac switches are used for logic switching not line voltage/amperage switching...

Can you suggest me one that can fit into this setup?

 

[Eros]

Yeah you'll probably end up with a toggle type switch. Do you have a fuse onboard. You may consider one on each side

The board have fuses for batteries protection. Because it is a power bank board, the fuses only apply to the usb ports for output and input.

Toggle type switch? Any that i can fit into this?

 

[david4500]

a potential of 90amps going through a tact switch rated for 50milliamps (0.05amps)... WOW

 

[JeremyR]

Yeah this setup is not safe, you should look at a real chip for this not a Power bank chip. I'm not even sure how this is working for you, is it adjustable voltage. What are you trying to get out of this? A zmax chip will take two of those batteries, with only
2 you'll have more room and be safer I would think.

 

[Ravenomic]

LOL it's obvious... The mod doesn't like you. It just says "FU." just had to point that out. Sorry for not being much of a help...

 

[Eros]

a potential of 90amps going through a tact switch rated for 50milliamps (0.05amps)... WOW

I connected the batteries in parallel. The only reading that increase is the capacity (mAh).

Your calculation, if I'm not mistaken referring to series connected batteries.

Definitely the tact doesn't suit for this kinda wiring. Lesson learned.

 

[Eros]

Yeah this setup is not safe, you should look at a real chip for this not a Power bank chip. I'm not even sure how this is working for you, is it adjustable voltage. What are you trying to get out of this? A zmax chip will take two of those batteries, with only
2 you'll have more room and be safer I would think.

Im trying to have like a mechanical mod, if u got what i meant. The board is only function to charge those 3 x 18650 (with protection).

The tact and 510 connected straight to the batteries (even though i solder it to the board, its just a spot for the wire from 510 and tact to have contact with the batteries). Because of that, i cant really have a VV or VW with this connection. It is similar to mechanical mod. Can possibly get 30A maximum discharge from fully charge batteries.

I've been thinking to only use 2 x 18650 to make a room for vandal switch. And like you said, safer.

 

[Eros]

LOL it's obvious... The mod doesn't like you. It just says "FU." just had to point that out. Sorry for not being much of a help...

LoL. Im fine. Just seeking for a good slim switch that can handle at least 12a current. By the way, the "FU" led sign indicate that the batteries is fully charged.

 

[rolf]

you are using the switch as a fuse !
there are circuts you could build using an fet for switching then the switching will be low amps for the tactiles .
the amount of batterys will not matter ... in parallel that is . it is the amps drawn ...read ohms law ...your atty is a resister and will draw x amount of current at a given voltage.
in your case it draws way to many amps .
also the switch in neg or pos don't matter .

 

[Eros]

Thank you rolf. Im looking for a switch that can handle 20amps current through it. Small enough to fit in. Any suggestion?

 

[retird]

Doubt you will find such a switch..... rolf's suggestion about a fet circuit is what you need....

 

[JeremyR]

Small enough is the problem, I see some on digikey but around 20mm diameter, round & rectangle, only way I see one that small is a mechanical switch from a mech pv soldered in. However if you put a self returning flat toggle at 15 amps it could also act as a protection in the circuit. And not stick in on position.

 

[Eros]

Small enough is the problem, I see some on digikey but around 20mm diameter, round & rectangle, only way I see one that small is a mechanical switch from a mech pv soldered in. However if you put a self returning flat toggle at 15 amps it could also act as a protection in the circuit. And not stick in on position.

Yes, small enough is the problem. 20mm diameter would touch the battery.. To have a fet circuit also close to impossible.

Can you guide to that self returning flat toggle?

 

[dr g]

You have realized why people use regulator boards.